Flushing-valve.



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i'tdisngar A.

CAGO, ``I`.1.ti\n`)fs, assadivoa morne BitooKs ilianuraofronine COMrANY, QF CHICaGO. LsINOIS; A! @remission 011: ,Aaigem rtesnmavatv'e." l

7o` @ZZ whom t may concern: l H

Be it known that I, "Roemer A. Brooks, a citizen of the United States, residing `at Chicago, in the county ofCook and State of Illinois, have invented certain new and useful Improvements in FlushingfValves, of which the following is a specification.`

My invention relates Ato slow-closing valves such as 1are usedto flush waterclosetsqin whichV the closing vn'oovelnent `is autoi'nati- Gally controlledand `retarded `bya conipletely inlosed and hermeticallysealed body of `oil or 'other similar liquid entirely Ainclosed and lout of Contact with `the water channels of the device. lthasfor its object the production of a valve of this type which shall be simple and Compact in construction, in which `the oil chamber shall `be packed and sealed completely and effectively, which shall have the Inode ofoperation and the coactionand relationship of parts hereinafter described, and which shall be simple and durable, and reliableand perfeet in action and operation; llVith these objects in view-my invention-consists in the combination of elements-and particular associationand .correlation of `parts hereinafter described, the essential elements of which are more particularly recited and pointedout in the appended claims;

i `Of the drawings, which illustrate a preferred and desirable einbodiinentof my invention, Figure l is a central vertical' section showing the `valve (in norina'lyunoperated position; llig. 2 asimilar section, but showing both the `inain valve and relief valve in loweri'nost position; and Fig;` fraginentary section in the sarne plane showing the valves at an intermediate position which occurs during their closing movements.

The. saine reference figures indicate" the salne parts on all the `figures of the idrawings. l f The casing ofniy new and improved flushing valve comprises a lower inielnber l, adapted to be screwed upon the service pipe 2 and Aformedand arranged At'o inclose the valves hereinafter described', a coupling member 3, a supporting' shell l which incloses the retarding mechanism, anda ap piece 5. It may be here generally explained that the operating stein of the device is idly connected with the cylinder of the retardingl device, and the lower end of the cylinder in tnrn is rigidly connected vwith specificaaa of rat-ers raten;

Applicatioirld September E53-19315. l Serial Nog50g734.

valso having valvular functions.

m menesteres pression of the .operating stein and unseatng of the relief valve causes the pressure on theniain valve to be `approxiinately equalized, so ,that the ino-let valveinay easily be opened under the `combined influence of .gravity and `direct pressure communicated casing, is closed at the ftop by the coupling nielnber 3 formed with a partition `6` equipped with a centrali stuffing box 1801i' suitable construction, such the well- Llonown forni illustrated,` through `which passesthe stern of the relief valve.` The valve chamber is formed with an internal f flange `7 arranged to support ring E8 in which; isforniejd a `valve seat for the main yalve. `3 Betweenthefring 8 and the parti tion 'G is interposed a `cylindrical `shell 91er@ vided `around its lower end with openings Q10, a packing `ring 41l, v disposedV between the ,flange 7 and rlngS, and a second packing ring 1 2, disposedbetween the valve casing ,l and coupling ineinber, being provided to `forni impervious, secure 1joints.`

with a hollow stein lifw'hich at l the lower end carries the inlet valve proper, and at its -upper end Icarries a diskof somewhat larger diameter-0 than the inlet valve-and The `inlet valve comprises a disk or circularblookpon tion linear the lower endof the stem which is adaptedto enter a corresponding opening in the ring 8, aseating member below such disk rofsuitable material to form aninipervious closure when seated, and a clamping nutl screwed upon the lower end ofthe stein, the lower end` of this nut` being formed tolconstitute a valveseat for the relief valve. The upper end of the stein 13 carries a disk, inthe present instance formed asa shallow cup 1G, which iitswithin theshell 9 loosely", so that a liniitedliow of water past the valve is provided with `partial reduction of pressure, while a sudden and approximately complete drop of pressure is not perinittted p ntil `the disk passes 'below the top ofthe openings 10 i-n `.the shell. y y i The relief valve@ Carried@ thexleuersml thesteni of the reliefval've, and that the (le-` n o The `main `valve of nny` device formed of the valve stem 177 passing through the Y stuffing box 18 in the partition 6, as before Udescr'ibed, and centrally through the hollow i sleeve 19f'langed at its lower end and having vanes extending upwardly from such flange,

- the vanes being provided with shoulders 20,

is interposed between an abutment nut 21 arranged a short distance above the end of the valve lstem and a cupped nut 22 and lockingnut 23 which are secured upon the end of such stem and serve to confine the valve disk 24 in placeV against the disk of the sleeve. In the present instance the nut 21, sleeve 19 and nuts 22 and 23 are all interiorly threaded and screwed tightly together on the end of the valve stem 17. The diameter of the valve seat opening in the clamping nut orV ring 15 is less than that of the bore through the stem 13 of the main valve, and the shoulders 20 of the van'es project radially into position of interference with the internal 'ring or shoulder thus formed adjacent the relief valve seat.V It is obvious that between this position of interference and the opposite position in which the relief valve i's seated relative movement may take place. A

Above the partition 6 and within a chamber inclosed by it and the shell 4 and cap 5 are arranged the cylinder and piston and associated parts of the retarding device. The cylinder may conveniently be formed as illustrated, of a bottom casting or head 25, having a depending central boss into which the stem 17 of the relief valve is threaded and an upwardly extending interiorly-threaded flange, a cylindrical shell 26 threaded in said flange, and an upper head 27 screw-threaded upon said shell. It will be understood that the cylinder is filled nearly full with a suitable liquid, that used inpractice being a high-grade mineral oil which does not change in consistency under working conditions. The upper head 27 just mentioned, is formed wit-h an upstanding exteriorly threaded boss 28 at one side, upon which'is screwed the operating stein 29, such stem being equipped in the present instance with a push-button, though other operating means may be of course employed. Preferably the joint at the bottom of the cylinder is closed by a coating of solder, and a packing washer 30 inter aosed between the shell 26 and upper h ead 2 to seal it against leakage of the inclosed body of oil. The upper head is also formed with a central boss 31 in which is arranged a stuffing box 32 surrounding the upper part of a sleeve or hollow stem 33, to which stem is fixed the piston of the retarding device and which stem at its upper end is secured in fixed relation` to the cap piece 5 of theV case by means Apressure in the stufling box of a short flanged or headed nut or sleeve 34 screw-threaded thereon and confined in place on the cap piece by a plate or n'ut 35 which is screw-threaded upon the base of the hub. A lat-eral forked extension 36 of the plate 35 embraces between its branches a lug 37 projectingdownwardly from the cap piece 5 to prevent rotation of the hub and stem within the bearing of the hub in said cap piece, this bearing being made somewhat loose fitting` in order that the piston may adjust itself to slight irregularities of movement of thc cylinder. f

The piston of the retarding device in the present instance comprises an upper plate 38 and a lower plate 3f), both screwed upon the hollow stem 33, and a cup leather 4() clamped between such plates. rllhe lower plate 39 is preferably formed with a depending circular rib to provide ready means for securing a screen of wire gauze or other suitable strainer 41 over the' lower end of the stem. Above the level of the upper plate 38 the interior of the hollow stem is in communication through av perforation 42 with the upper chamber of the cylinder. Above this perforation 42 the interior of the stem is screw-threaded and a long-threaded plug 43 the end of which may be shifted to more or less completely uncover or close the perforation 42 serves to restrict the passage of liquid therethrough according to the position to which it is adjusted. This plug is packed, above the level of the perforation, by a winding of fine fibrous material 44 which engages the complementary threads of the plug and stem, and effectively prevents leakage of liquid along 'such joint. The top of the plug 43 is slotted to enable it to be readily adjusted by means of a screw driver, and a cap 45, screwed upon the top of the stem 33, is provided to add a neat finish to the top.

The cylinder is yieldingly pressed upward by a conical, spirally coiled spring 46, the larger lower end of which bears upon the top of the piston disk 39 and the smaller end of which is seated against the gland 32 of the stufiing box. Since this spring is always under compression the pressure exerted by it on the gland serves to constantly maintain and keep the joint tightly packed. l\/loreover, the conical shape of the spring is of advantage in permitting it to collapse more completely and into less space than would be possible in the case of a cylindrically coiled spring.

With the construction and arrangement of parts just described, it is evident that the cylinder and connected parts may easily be forced downwardly against the stress of the spring 46 by depressing the push button on the operating stem, the cup leather of the piston permitting the passage of oil from thefupper to the lower side of the pisu titi ton under the influence of pressure" above D the piston, but that the return of the cyl1nder and other parts to `upper position under the influence of the spring will be retarded, since the oil cannotpass back past the cup leather but must pass through therestricted perforation or opening 42, at a speed governed by the adjustment of theplug 43. p

The operation of my improved flushing valve will readily be understood from the foregoing description. -Upon'depression of the operating stem 29, the cylinder 26 and relief valve stem 17 will `beforced downward and the relief valve unseated,` the inlet valve for the moment remaining seated. Tater under pressure will thereupon pass through fthe interior of the hollow stein 13 of the main valve and filling `the chamber above the disk `:16 exert,A pressure thereon nearly but not quite veclualizing the pressure tending to keep the inlet valve seated, the balancing of pressure Athus permitting the inlet valve to be carriediddwnwardly off its seat under, the influence `of gravity and manual pressureexerted on the'operating stem and communicated through contactof the shoulders 20 at the upper end of the vanes of the sleeve 19 of the relief valve with the lower contracted portion of the clamping ring 15 of the inlet valve. It is evident that as soon as the disk or block portion `14 of the inlet valve passes below the plane of the valve seat, which occurs somewhat before the disk 16' passes below the top of the openings 10, the pressure upon the bottom of the inlet valve will fall greatly, and the inlet valve will dropv until it comes to rest upon the top of the relief valve, or until the force exerted by the upward flow of water balances its weight, the water in the mean`` time flowing freely around the inlet valve,

through the openings 10, and out through the outlet pipe 47 to Hush the closet bowl.

During the rst part of the slow, upward movement of the relief valve to normal position the inlet valve will rest upon the relief valve and be carried upward with it, but as soon as the block portion 14 of the inlet valve enters and closes the opening at the valve seat, the increased pressure be neath such valve will. immediately force 1t` to its seat, against the lesser pressure on the top of the disk 16, thus lifting the inlet valve off the more slowly moving relief valve and opening a passage through the hollow stem 13 of the main valve. Water will flow through this channel during the remainder of the closing movement of the relief valve and will be forced around the edges of the loose fitting disk 16 to produce thc cafterfiow necessary to refill the bottorn of the closet bowl, which in the ordinary form of siphon closet with which. my improved valve is adapted to ble Aused willube completely emptied by the siphonic act-ien tdt of themain flush of 4water.` 'llhisafterflow `continues after theseating of the reliefvalve vided, will be washed through sncli ope`nings into the discharge passages of the valve when the main valve descends, and the yparts are Vthus kept clean and all cutting and abrasive action on the edgeof suchdisk,

destroying its original adjustment with respect to the shell 9, is avoided.

I claim:

1. In a device of the character described and in combination with means for' operat` ingthe hereinafter recited relief valve and automatic retarding means for closing such valve slowly, a main valve having a passage through its body and formed with a valve seat at the lower end of such passage and also having a block portion ar "'anged to close the main valve opening in advance of the seating of the valve, a relief valve cooperating with said valve seat at the bottom of the passage through the main valve and arranged to carry said main valve toward its seat as said relief valve closes, said main valve having a relatively unretardcd closing movement with respect to said relief valve,

whereby said main valve will seat quickly in advance of the relief valve when the block portion of the main valve closes the main valve opening and a limited closing flow of water will occur through the relief valve.

2. A flushing valve mechanism comprising a valve casing formed with a partition which is provided with an inlet valve seat, a cylindrical shell within said easing having a closed upper end and with its lower end in commiinication with the discharge passages of the device, a `main valve con prising an inlet valve at its lower end and a hollow stein and a disk loosely fitting in said cylindrical shell, said inlet valve being formed `with a block 4portion arranged to close the inlet opening in advance of the seating of such valve and the lower end of the hollow stem of the valve being formed as a relief valve seat, a spring-pressed re lief valve yieldingly tending to seat upon said last mentioned valve seat, said main seating Vsaid. :relief and main val-ves, and

il. fi 0 #sie means for retarding the closing movement of the relief valve, said disk upon the main valve being arranged to exert a relatively slight retarding influence thereon, whereby said main valve will seat quickly in advance r ingthe hereinafter recited relief valve and means for retarding the closing movement thereof, valve mechanism comprising a valve casing formed with a partition which is prou vided with an inlet valve seat, a tubular shell concentric with said seat having a closed upper end and at its lower end in open communication with the discharge passage of the device, a main valve having its lower end formed as an inlet valve arranged to coperate with said inlet valve seat and having a hollow stem and a disk fitting loosely within said tubular shell, said inle valve having a. block portion arranged to close the inlet valve orifice in advance of the seating of such valve and being formed with a valve seat at the lower end of the bore through its stem, and a relief valve arranged to coperate with said last mentioned valve seat, the said disk on the main valve being arranged to reduce the pressure thereabovc to less than the pressure on lhe inlet valve and said main valve having a limited free relative movement with respect lo the relief valve, whereby said main valve will seat quickly in advance of the relief valvel when the block portion of such inlet valve closes the inlet valve orilice and a limited closing flow of water will be maintained into the upper end of the tubular shell.

Y n ROBER" A. BROOKS. Witnesses LOUIS B. EnwiNs,

ROBERT DOBBERMAN.

Ccpies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C. 

